Automix 4 User Manual
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Rear Panel Features
MIC IN Balanced microphone level input on removable “Euro” connector.
LINE IN Balanced line level input on removable “Euro” connector. Both the mic and line
inputs feed the same gain stage, but the line input terminals include a pad to accommodate
line level signals.
INSERT IN/OUT This is a unbalanced direct out and bus in circuit. The GND connector is
common to both the INS. OUT and INS. IN points. The output is after the last gain stage, just
before the summing bus. The input is a direct path to the summing bus.
INS. BYPASS/INS. ENABLE Used in conjunction with the INSERT IN/OUT terminals, this
switch determines the internal connection between these points. In bypass mode, the signal
will pass through without any modification. In enable mode, the signal is broken to allow for
connection of an external device.
PHANTOM POWER SWITCH This switch applies 48VDC phantom power to the micro-
phone terminals of Channel 1 & 2.
LINK CONNECTOR This three-position connector allows multiple units to be “linked”
together for larger systems. The C connector links two or more control bus circuits. The A
connector links two or more audio bus circuits. SHD is common to both.
LINK SWITCH This switch, in conjunction with the LINK CONNECTOR, enables linking of
multiple units. Proper operation is a single “Master” and multiple “Slave” units.
MIC/LINE SWITCH Determines the level of the main output. In “line” mode, the output will
drive power amplifiers. In the “mic” mode, the output will drive other mic level input circuits.
MAIN OUT The output of the Automix 4’s summing bus. The level of this output is deter-
mined by the position of the MIC/LINE SWITCH and each input’s GAIN control. This is an
electronically balanced output with a common ground.
LINE OUT This is an auxiliary unbalanced line level output. This signal is after the last gain
stage, at an identical point of the MAIN OUT.
POWER SWITCH Applies mains power supply from the A/C POWER RECEPTACLE.
A/C POWER RECEPTACLE For standard IEC power cable (included).
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